If you clocked the awkward tension between Ray J and Stacy Francis during tonight's Celebrity Big Brother (January 3) live launch and want to know more, than you're in luck.

Because their backstory is pretty juicy.

The pair reportedly dated while Ray J was also seeing Whitney Houston - and their courtship apparently caused major drama between Stacy Francis and the iconic singer just two days before her death in 2012.

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So we're pretty sure that anecdote is going to emerge as part of this year's getting-to-know-each-other task.